Munin contributed plugins

#!/bin/bash

# -*- bash -*-

: << =cut

=head1 NAME

haproxy_active_backend -Haproxy servers active backend

=head1 CONFIGURATION

  [haproxy*]

  user root

  env.backend backend_name_1 backend_name_2 backend_name_3

  env.frontend frontend_name_1 frontend_name_2 frontend_name_3

  # You can use url o socket option, use one of them, not both!

    env.url  http://user:passwd@IP:port/admin?stats;csv

  #  or

    env.socket /var/lib/haproxy/stats.socket

=head1 AUTHOR

Ricardo Fraile <rfrail3@yahoo.es>

=head1 LICENSE

GPLv2

=head1 MAGICK MARKERS

 #%# family=auto

 #%# capabilities=autoconf

=cut

. $MUNIN_LIBDIR/plugins/plugin.sh

function parse_url {

	# Modify ifs variable

	OIFS=$IFS;

	IFS=",";

	PXNAME="$1"

	SVNAME="$2"

	VALUE="$3"

	if [ ! -z "$url" ]; then

                LINE1=`curl -s "$url" | head -1 | sed 's/# //'`

                LINE2=`curl -s "$url" | grep "$PXNAME,$SVNAME"`

        fi

        if [ ! -z "$socket" ]; then

                LINE1=`echo 'show stat' | socat unix-connect:"$socket" stdio | head -1 | sed 's/# //'`

                LINE2=`echo 'show stat' | socat unix-connect:"$socket" stdio | grep "$PXNAME,$SVNAME"`

        fi

	ARRAY1=($LINE1);

	# Find values

	for ((i=0; i<${#ARRAY1[@]}; ++i));

	do

        	# Get data

	        if [[ "${ARRAY1[$i]}" == "${VALUE}" ]]; then

	                o=$i;

        	        o=`expr $o + 1`

                	echo ${LINE2} | cut -d" " -f $o

	        fi

	done

	# Reset ifs

	IFS=$OIFS;

}

SVNAME='BACKEND'

LIST=$backend

if [ "$1" = "autoconf" ]; then

	echo yes

	exit 0

fi

if [ "$1" = "config" ]; then

	echo "graph_title Active Servers ${SVNAME}"

	echo 'graph_args --base 1000 -l 0 '

	echo 'graph_vlabel Servers'

	echo 'graph_scale no'

	echo 'graph_category loadbalancer'

	echo "graph_info Active Servers ${SVNAME}"

	for i in ${LIST}; do

	        echo "act`echo $i | md5sum | cut -d - -f1 | sed 's/ //g'`.label Active Servers $i"

        	echo "act`echo $i | md5sum | cut -d - -f1 | sed 's/ //g'`.type GAUGE"

	        echo "act`echo $i | md5sum | cut -d - -f1 | sed 's/ //g'`.min 0"

        	echo "act`echo $i | md5sum | cut -d - -f1 | sed 's/ //g'`.info Active Servers $i"

	done

	exit 0

fi

	for i in ${LIST}; do

		ACT=`parse_url ${i} ${SVNAME} act`

	        echo "act`echo $i | md5sum | cut -d - -f1 | sed 's/ //g'`.value $ACT"

	done